Merge branch 'fix/hda' into topic/hda

[linux-2.6-omap-h63xx.git] / include / linux / mmc / core.h

diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 63a80ea611248fe2551243548fe3ebdd883851de..143cebf0586f140fd267bf360d69654281584d11 100644 (file)
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -25,14 +25,20 @@ struct mmc_command {
 #define MMC_RSP_CRC    (1 << 2)                /* expect valid crc */
 #define MMC_RSP_BUSY   (1 << 3)                /* card may send busy */
 #define MMC_RSP_OPCODE (1 << 4)                /* response contains opcode */
-#define MMC_CMD_MASK   (3 << 5)                /* command type */
+
+#define MMC_CMD_MASK   (3 << 5)                /* non-SPI command type */
 #define MMC_CMD_AC     (0 << 5)
 #define MMC_CMD_ADTC   (1 << 5)
 #define MMC_CMD_BC     (2 << 5)
 #define MMC_CMD_BCR    (3 << 5)
 
+#define MMC_RSP_SPI_S1 (1 << 7)                /* one status byte */
+#define MMC_RSP_SPI_S2 (1 << 8)                /* second byte */
+#define MMC_RSP_SPI_B4 (1 << 9)                /* four data bytes */
+#define MMC_RSP_SPI_BUSY (1 << 10)             /* card may send busy */
+
 /*
- * These are the response types, and correspond to valid bit
+ * These are the native response types, and correspond to valid bit
  * patterns of the above flags.  One additional valid pattern
  * is all zeros, which means we don't expect a response.
  */
@@ -41,11 +47,29 @@ struct mmc_command {
 #define MMC_RSP_R1B    (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
 #define MMC_RSP_R2     (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
 #define MMC_RSP_R3     (MMC_RSP_PRESENT)
+#define MMC_RSP_R4     (MMC_RSP_PRESENT)
+#define MMC_RSP_R5     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 #define MMC_RSP_R6     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 #define MMC_RSP_R7     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 
 #define mmc_resp_type(cmd)     ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
 
+/*
+ * These are the SPI response types for MMC, SD, and SDIO cards.
+ * Commands return R1, with maybe more info.  Zero is an error type;
+ * callers must always provide the appropriate MMC_RSP_SPI_Rx flags.
+ */
+#define MMC_RSP_SPI_R1 (MMC_RSP_SPI_S1)
+#define MMC_RSP_SPI_R1B        (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY)
+#define MMC_RSP_SPI_R2 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
+#define MMC_RSP_SPI_R3 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
+#define MMC_RSP_SPI_R4 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
+#define MMC_RSP_SPI_R5 (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
+#define MMC_RSP_SPI_R7 (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
+
+#define mmc_spi_resp_type(cmd) ((cmd)->flags & \
+               (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY|MMC_RSP_SPI_S2|MMC_RSP_SPI_B4))
+
 /*
  * These are the command types.
  */
@@ -54,12 +78,19 @@ struct mmc_command {
        unsigned int            retries;        /* max number of retries */
        unsigned int            error;          /* command error */
 
-#define MMC_ERR_NONE   0
-#define MMC_ERR_TIMEOUT        1
-#define MMC_ERR_BADCRC 2
-#define MMC_ERR_FIFO   3
-#define MMC_ERR_FAILED 4
-#define MMC_ERR_INVALID        5
+/*
+ * Standard errno values are used for errors, but some have specific
+ * meaning in the MMC layer:
+ *
+ * ETIMEDOUT    Card took too long to respond
+ * EILSEQ       Basic format problem with the received or sent data
+ *              (e.g. CRC check failed, incorrect opcode in response
+ *              or bad end bit)
+ * EINVAL       Request cannot be performed because of restrictions
+ *              in hardware and/or the driver
+ * ENOMEDIUM    Host can determine that the slot is empty and is
+ *              actively failing requests
+ */
 
        struct mmc_data         *data;          /* data segment associated with cmd */
        struct mmc_request      *mrq;           /* associated request */
@@ -76,7 +107,6 @@ struct mmc_data {
 #define MMC_DATA_WRITE (1 << 8)
 #define MMC_DATA_READ  (1 << 9)
 #define MMC_DATA_STREAM        (1 << 10)
-#define MMC_DATA_MULTI (1 << 11)
 
        unsigned int            bytes_xfered;
 
@@ -104,9 +134,21 @@ extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
 extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
        struct mmc_command *, int);
 
-extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *, int);
+extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *);
+extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int);
 
-extern void mmc_claim_host(struct mmc_host *host);
+extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort);
 extern void mmc_release_host(struct mmc_host *host);
 
+/**
+ *     mmc_claim_host - exclusively claim a host
+ *     @host: mmc host to claim
+ *
+ *     Claim a host for a set of operations.
+ */
+static inline void mmc_claim_host(struct mmc_host *host)
+{
+       __mmc_claim_host(host, NULL);
+}
+
 #endif